DirectGlow Set of 3 Invisible UV Blacklight Ink Marker Blue Red Yellow : Permanent Markers : Office Products

DirectGlow Set of 3 Invisible UV Blacklight Ink Marker Blue Red Yellow : Permanent Markers : Office Products

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This is that hard to find UV Blacklight Reactive Invisible Ink for box marking, document marking, and other unique security applications. Only visible under black light. Ink is water proof and very difficult to remove. Best viewed in dark or shaded area. Opticz Blacklight Reactive Invisible Printing Inks are suitable for paper marking as well as non-pourous material marking.

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These UV ink markers are completely invisible in normal lighting, but illuminate incredibly bright under UV blacklight! Use these ink markers to

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